[lldb-dev] C++ API: Passing information from debuggee to debugger

Colin Riley colin at codeplay.com
Tue Jun 2 03:00:47 PDT 2015

comment inline

On 02/06/2015 10:21, Pavel Labath wrote:
> Hello,
> Yes, please file a bug. I been wanting to implement passing of the
> struct siginfo_t from the inferior all the way up to lldb (besides
> your use case, it is also useful for displaying more precise
> information about segfaults, etc.). However, that is not a priority
> now, so it may take a while (patches welcome though :) ).
>>> So, is there any other "legal" way to achieve what I need?
> As I understand it, the way people do this kind of thing usually is to
> have a special function in the inferior (e.g., void
> my_debugger_interface(my_data *). Then the debugger can set a
> breakpoint on this function and read all the data it needs from the
> function arguments. If you want to be sure two threads don't call this
> function simultaneously, you can protect it with a regular mutex.
For an example, the recent r238768 implements this sort of system in the 
RenderScript language runtime.
> pl
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- Colin Riley
Senior Director,
Parallel/Graphics Debugger Systems

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